.section-card {
  background: var(--bg-color);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: 20px;
  margin-bottom: 20px;
}

.center-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 10px;
}

.training-zones {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.training-zones > div {
  flex: 1;
  min-width: 200px;
  background-color: #f4f4f4;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.training-zones > div:nth-child(1) {
  background-color: var(--zone1-color);
}

.training-zones > div:nth-child(2) {
  background-color: var(--zone2-color);
}

.training-zones > div:nth-child(3) {
  background-color: var(--zone3-color);
}

.training-zones h4 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.training-zones p {
  margin: 4px 0;
}

.training-plan h3 {
  margin-bottom: 10px;
}

.training-textarea {
  width: 100%;
  border: none;
  resize: none;
  background: var(--bg-color);
  color: var(--text-color);
}